Arthur, one of a pair of infamous kittens who shut down subway service for hours in 2013 when they wandered onto the Brooklyn tracks, is back home after a month-long odyssey on the streets of Prospect Heights.

He escaped from his home on Nov. 20 when a house sitter left a window open, and his adopted parents and brother, August, had been worried ever since.

“We are overcome with joy and relief,” his human mom, Katherine Lynn wrote on a Facebook page she made to spread the word about the missing feline. “He is a few sizes smaller than when he left home, but our boy is unhurt, eating well, and sleeping off his total exhaustion. August has his brother back after four long weeks.”

Lynn and her husband Keith had spent the month frantically searching the neighborhood, putting up flyers and setting traps filled with his favorite food and clothes that smell like them and August.

Lynn didn’t specify how Arthur finally got back home. She just said that everyone in the family was relieved.

“We can hardly believe our fortune to have had you all rooting for us and for Arthur,” she wrote. “Now… time for a catnap.”